1-800-829-1040 hours 7 AM - 7 PM local time Monday-Friday
When calling the IRS do NOT choose the first option re: "Refund", or it will send you to an automated phone line. Choose option 2 for "personal income tax" instead.
- Then press 1 for "form, tax history, or payment".
- Then press 4 "for all other questions."
- Then press 2 "for all other questions." It should then transfer you to an agent.
Or you can contact your local IRS office. See this IRS website for local IRS offices - http://www.irs.gov/uac/Contact-Your-Local-IRS-Office-1 or call 1-844-545-5640 to set up an appointment